1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2159214b1c05a17ac2333dea98f12202ccd555930582a973df672e1550ff105. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ade97d6-b810-4519-9f0c-949de8a6d2d2.json and https://artists.proofprofile.net/proofs/artist/4ade97d6-b810-4519-9f0c-949de8a6d2d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379f0ad828a5b7ada4684506647bcb7250637f7c662451bc7d6ca7cb15526ddf. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330602116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a654f48450506759d62f0e54ea4f5a88fc6fecd0eaede07be08eaa9fd6b824. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330602117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf4d1329cbc1e1868a9b9436e2ac5938aee5dad8a2e057486fed95bdd01058c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330602119.
Çember Beste (Vehc-i Arazbar Takım: Vardakosta Ahmet Ağa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38c28358b831b58d784a2db498ca9719cbefc9f6f3a0ceffb5a943e7a720478. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330602121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63af1b1ea39757e54f722c818b1a448612871f60ae639675f14b8e4efdb03f54. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330602128.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Mevlana Uşşak Mevlevi Ayini (Klasik Türk Musikisi Koleksiyonu 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4fb227701be55991ddde74a76a6849c2fbc91f09742e385db42dc46d2e1657. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0380601245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7a6cddf821b7d7b38a5859ea25dfee6cd549284d3c3bcaf8e50c84623e65ea. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0380601246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d88314b7fe21c9d6ee215598a7d1d0e757897f2b93b29c9f3a1acac56f5860f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1504243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335da962a8bc17e82be9d7f86d9c8dc87f830d75046093d9d8dae70be8449a6e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330907180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcb42f01c0ac3c9ecd7b0b0083f3f155ead27803724e64a3867e355ff5981cf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330907181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54649b42d70d8a90bacca4ebc87f4f453791e0fbb412080ee28c514bc23bf3d0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330907185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242e40bcf100867223964612034004c9ccfd386fc2c4c23e5d02c0b2b81f63a1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330907188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecafa264801af935bcbcb142317c32223acffd71681044e58814c8eb1842e054. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330907197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6775af4abab81c518153d9652330edd2fe3e88f1145a7276f8b2a135a376e27b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330907198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3198780bb384b40a6df1644d9987a051201d9d47e210bd7c58e49d9e8625680a. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330907179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965a2c99d8a788652eba2670f8944f498269e169453d8da39012ea8364fc9f1a. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330907183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce6493927e7cd58679a8237e0f111d0607385b59bb51c7e050d103a796a2f88. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330907186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70ee3c845339e011e63d06472953dd80caf41c4b590bd9f075a6842a008ef8c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330907187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60f98e10b815089fe008531e94aaad9a2d388c18abbcd341740f35cb1dd48e1. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0330907189.